<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getUserList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户数据列表 -->
      <el-table :data="userList"
                border
                stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名"
                         prop="username"></el-table-column>
        <el-table-column label="邮箱"
                         prop="email"></el-table-column>
        <el-table-column label="电话"
                         prop="mobile"></el-table-column>
        <el-table-column label="角色"
                         prop="role_name"></el-table-column>
        <el-table-column label="状态">

          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state"
                       @change="userStateChange(scope.row)"></el-switch>
          </template>

        </el-table-column>
        <el-table-column label="操作">

          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       @click="showEditDialog(scope.row.id)"></el-button>

            <!-- 删除 -->
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色 -->
            <el-tooltip effect="dark"
                        content="分配角色"
                        placement="top"
                        :enterable="false">
              <el-button type="warning"
                         icon="el-icon-setting"
                         size="mini"></el-button>
            </el-tooltip>
          </template>

        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[1 , 2 , 5 , 10 , 15 , 20]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @closed="addDialogClosed">

      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">

        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"
                    type="password"></el-input>
        </el-form-item>

        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>

    </el-dialog>

    <!-- 修改用户信息的对话框 -->
    <el-dialog title="修改用户"
               :visible.sync="editDialogVisible"
               width="50%"
               @closed="edieDialogClosed">

      <el-form :model="editForm"
               :rules="editFormRelus"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>

        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data () {
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^[A-Za-z0-9]+([_\\.][A-Za-z0-9]+)*@([A-Za-z0-9\\-]+\.)+[A-Za-z]{2,6}$/

      if (regEmail.test(value)) return callback()

      callback(new Error('请输入合法的邮箱'))
    }

    var checkMobile = (rule, value, callback) => {
      const regMobile = /^1(3|4|5|6|7|8|9)\d{9}$/

      if (regMobile.test(value)) return callback()

      callback(new Error('请输入合法的手机号'))
    }

    // 邮箱验证
    const emailValidator = [
      { required: true, message: '请输入邮箱', trigger: 'blur' },
      { validator: checkEmail, trigger: 'blur' }
    ]

    // 手机号验证
    const mobileValidator = [
      { required: true, message: '请输入手机号', trigger: 'blur' },
      { validator: checkMobile, trigger: 'blur' }
    ]

    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },

      userList: [],

      total: 0,

      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,

      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },

      // 添加用户的表单验证
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在 3~10 个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在 6~15 个字符之间',
            trigger: 'blur'
          }
        ],
        email: emailValidator,
        mobile: mobileValidator
      },

      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,

      // 获取到的用户信息对象
      editForm: {},

      // 修改表单的验证规则
      editFormRelus: {
        email: emailValidator,
        mobile: mobileValidator
      }
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }

      this.userList = res.data.users
      this.total = res.data.total

      console.log(this.userList)
    },

    // 监听 pagesize 改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },

    // 监听 pagenum 改变的事件
    handleCurrentChange (newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },

    // 监听 switch 开关状态的改变
    async userStateChange (userinfo) {
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )

      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }

      this.$message.success('更新用户状态成功')
    },

    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },

    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请按照要求填写完整的用户信息')

        // 发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)

        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败！')
        }

        this.$message.success('添加用户成功！')

        // 隐藏添加用户的对话框
        this.addDialogVisible = false

        // 重新获取用户列表的数据
        this.getUserList()
      })
    },

    // 展示编辑用户的对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get(`users/${id}`)

      if (res.meta.status !== 200) return this.$message.error('获取用户信息失败！')

      this.editForm = res.data

      this.editDialogVisible = true
    },

    // 监听修改用户对话框的关闭事件
    edieDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },

    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请按照要求填写完整的用户信息')

        // 发起修改用户信息的请求
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })

        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败')

        this.editDialogVisible = false

        this.$message.success('修改用户信息成功')

        this.getUserList()
      })
    },

    // 根据id删除用户信息
    async removeUserById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 如果用户确认，则返回值为字符串：confirm
      // 如果用户取消，则返回值为字符串：cancel
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')

      const { data: res } = await this.$http.delete(`users/${id}`)

      if (res.meta.status !== 200) return this.$message.error('删除用户信息失败')

      this.$message.success('删除用户信息成功！')

      this.getUserList()
    }
  }
}
</script>

<style lang="less" scoped>
</style>
